Power-hammer.



H. ALINDER. POWER HAMMER. APPLICATION FILED JULY 11, 1908.

Patented Aug. 9,1910.

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POWER-HAMMER.

To all whom it may concern:

Be it known that I, HENRY ALINDER, a subject of the King of Sweden, buthaving declared his intention of becoming a citizen of the United Statesof America, residing at Milwaukee, in the county of Milwaukee and Stateof Visconsin, have invented a certain new and useful Improvement inPower-Hammers, of which the following is a specification.

My invention relates to improvements in power hammers known as tilt ordead stroke hammers, and the object .of the invention is to provide apower hammer having a simple spring construction which combineselasticity, adjustment and strength in the oper ating parts of thehammer. It is adjustable as to the length of the stroke and force of theblow as required by the piece to be forged. The hammer will permitworking on both the wide and narrow side of a flat bar without anyadjustment. I attain these objects by the mechanism illustrated in theaccompanying drawing in which,

Figure 1 is a side view of the entire hammer; Fig. 2, Fig. 3, and Fig.of a part of the hammer showing modifications of my invention.

Similar figures refer to similar parts throughout the several views.

The power hammer consists of a frame 1, with guides 2 in which thehammer head 3 is movable up and down. The hammer head 3 is connected toarm 4 of the two-armed lever, which serves to actuate the hammer, theconnection being made by inserting the fore end of said arm 4 into anoblong hole in top of hammer head 3. The arm 4 is pivoted to ahorizontal pin 5 turn1ng in bearings of frame 1. On the pin 5 is plvotedanother arm 6, constituting the other arm of the said two-armed lever.At the rear end of arm 6 are hinged auxiliary arms 7 and 8, the foreends of which embrace arm 4, as illustrated in Fig. 1, said auxiliaryarms 7 and 8 serving to yieldingly transmit the power for actuating thehammer from said arm 6 to arm 4 by means of spring Said spring 9 restingon top of arm 7, 1s

Specification of Letters Patent. Application filed July 11, 1908.

4 are side views Patented Aug. 9, 1910. Serial No. 443,152.

connected to arm under side of arm or curved guide 11,

8 by bolts 10. To the 6 is secured a straight carrying a sliding piece12 connected by pin 13 to a crank rod 14, the lower end of whichconnects to a crank shaft 15, turning in bearings of frame 1 andcarrying a flywheel 16, and tight and loose pulleys 17.

Referring to Fig. 2 and Fig. 3,a helical spring 18 rests on top of arm 7and is by means of eye bolts 19 connected to pin 5. Said spring 18serves to substitute the action of spring 9 011 arm 7 shown in Fig. 1.Arm 8 shown in Fig. 1, is in Fig. 2 substituted by a leaf spring 20rigidly fixed to the underside of arm 6 and embracing arm 4 with itsfore end. Said spring 20 serves to substitute the action on arm 4 by arm8 shown in Fig. 1. In Fig. 3, a helical spring 21 rests on the fore endof arm 7 and is connected to arm 4 by means of bolt 22. Said spring 21serves to substitute the action on arm 4 by arm 8 shown in Fig. 1.

Referring to Fig. 4, this view shows a modification of my springconstruction shown in Fig. 3, and diifers only from Fig. 3 in arrangingthe springs. Spring 18 above pin 5 of Fig. 3, has the same action 011arm 4 as spring 18 of Fig. 4, and the same may be said of spring 21 ofFig. 3 and spring 21 above pin 5 in Fig. 4.

I claim:

1. In a power hammer, the combination of a frame, two arms pivoted tothe frame, an auxiliary arm pivoted to one of said arms and transmittingforce directly to the other said arm, and elastic means coacting withthe auxiliary arm to maintain or tending to maintain said frame-pivotedarms in a definite relative position the one to the other.

2. In a power hammer, the combination of a frame, two arms pivoted tothe frame, auxiliary arms pivoted to the frame-pivoted arms andtransmitting force directly thereto, and a single elastic means coactingwith said auxiliary arms to maintain or tending to maintain the saidframe-pivoted arms in a definite relative position the one to the other.

3. The combination of a frame, two arms pivoted to each other and tosaidframe, an

In testimony whereof, I affix my signature 1n the presence of twowltnesses.

HENRY ALINDER.

WVitnesses G. F. DE WEIN, H. 0'. CASE.

